Toothbrush



FIG. 1 is an exploded perspective view of a toothbrush showing my new design;

FIG. 2 is an assembled front end elevational view thereof;

FIG. 3 is a rear end elevational view thereof;

FIG. 4 is a side elevational view thereof, the side opposite being a mirror image of the side shown in FIG. 4.

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a toothbrush, as shown and described. 